Another goodie to come out of Mobile World Congress was a demo from Google. They showed off a new web app for Gmail that allows for offline use, in other words you will get full access even without the network being active. The demo, which was given by Vic Gundotra, who is the vice president of engineering showed the app on the recently announced HTC Magic as well as the iPhone 3G.

The application takes advantage of standards such as Database (W3C HTML5), App Cache (W3C HTML5) and GeoLocation (W3C), but in short it allows not only the data from the app, but the app itself to be cached locally on your device.

As of now, this is still being referred to as a “technical concept” which means that although it looks ready, we may not see it for a while. Additionally, this will come as good news for those that develop on multiple platforms because it will allow them to create one version that will have the same look and features on multiple devices.